Valve Corporation
| Title | Platform | Genre | Score | Release Date |
|---|---|---|---|---|
| Left 4 Dead | PC | First Person Shooter | - | Nov 17, 2008 |
| Left 4 Dead | X360 | First Person Shooter | - | Nov 18, 2008 |
| Left 4 Dead | OSX | First Person Shooter | - | Oct 27, 2010 |
| Left 4 Dead 2 | X360 | First Person Shooter | 8/10 | Nov 17, 2009 |
| Left 4 Dead 2 | PC | First Person Shooter | 8/10 | Nov 17, 2009 |
| Left 4 Dead 2 | OSX | First Person Shooter | 8/10 | Oct 5, 2010 |
| Madballs In Babo: Invasion | PC | Action Adventure | 7/10 | Sep 17, 2009 |
